The art critic and writer John Berger has died. He changed our perception of art with his 1972 BBC TV series and book Ways of Seeing. An accomplished poet and playwright, he also wrote several novels including the Booker Prize-winning G which tells the story of a Casanova-like figure who gradually comes to political consciousness. Writer Lisa Appignanesi assesses his work.

What were "the most enjoyable" books published in 2016? Chair of Judges, historian Kate Williams reveals that the Costa Book Awards category winners are: Francis Spufford for the First Novel Award; Keggie Carew who wins the Costa Biography Award; Alice Oswald who wins the Poetry Award; Brian Conaghan for the Children's Book Award; Sebastian Barry who wins the Costa Novel Award. He tells us about writing Days Without End.

Chris Lang, the creator of the ITV hit drama Unforgotten, began his career in the mid-1980s as part of a comedy trio, The Jockeys of Norfolk, alongside Hugh Grant. As the new series of Unforgotten begins, Chris discusses the screenwriter's art of wrong-footing the audience.

Presented by Samira Ahmed.